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dyncom: Remove unnecessary initialization code.

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Targeting ARM version variants was only a thing on armemu.

The reset routine also does basically the same thing as NewState.
This commit is contained in:
Lioncash 2015-07-25 21:55:52 -04:00
parent 3257d797e1
commit 03213f893e
4 changed files with 2 additions and 59 deletions
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7
src/core/arm/dyncom/arm_dyncom.cpp
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@ -20,15 +20,8 @@
ARM_DynCom::ARM_DynCom(PrivilegeMode initial_mode) {
state = Common::make_unique<ARMul_State>();
ARMul_NewState(state.get());
ARMul_SelectProcessor(state.get(), ARM_v6_Prop | ARM_v5_Prop | ARM_v5e_Prop);
state->bigendSig = LOW;
state->NirqSig = HIGH;
// Reset the core to initial state
ARMul_Reset(state.get());
state->Emulate = RUN;
// Switch to the desired privilege mode.
switch_mode(state.get(), initial_mode);

32
src/core/arm/skyeye_common/arminit.cpp
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@ -19,33 +19,6 @@
#include "core/arm/skyeye_common/armstate.h"
#include "core/arm/skyeye_common/vfp/vfp.h"
/***************************************************************************\
* Returns a new instantiation of the ARMulator's state *
\***************************************************************************/
ARMul_State* ARMul_NewState(ARMul_State* state)
{
state->Emulate = RUN;
state->Mode = USER32MODE;
state->lateabtSig = HIGH;
state->bigendSig = LOW;
return state;
}
/***************************************************************************\
* Call this routine to set ARMulator to model a certain processor *
\***************************************************************************/
void ARMul_SelectProcessor(ARMul_State* state, unsigned properties)
{
state->is_v4 = (properties & (ARM_v4_Prop | ARM_v5_Prop)) != 0;
state->is_v5 = (properties & ARM_v5_Prop) != 0;
state->is_v5e = (properties & ARM_v5e_Prop) != 0;
state->is_v6 = (properties & ARM_v6_Prop) != 0;
state->is_v7 = (properties & ARM_v7_Prop) != 0;
}
// Resets certain MPCore CP15 values to their ARM-defined reset values.
static void ResetMPCoreCP15Registers(ARMul_State* cpu)
{
@ -104,9 +77,7 @@ static void ResetMPCoreCP15Registers(ARMul_State* cpu)
cpu->CP15[CP15_TLB_DEBUG_CONTROL] = 0x00000000;
}
/***************************************************************************\
* Call this routine to set up the initial machine state (or perform a RESET *
\***************************************************************************/
// Performs a reset
void ARMul_Reset(ARMul_State* state)
{
VFPInit(state);
@ -125,4 +96,5 @@ void ARMul_Reset(ARMul_State* state)
state->abortSig = LOW;
state->NumInstrs = 0;
state->Emulate = RUN;
}

20
src/core/arm/skyeye_common/armstate.h
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@ -89,30 +89,11 @@ struct ARMul_State
unsigned bigendSig;
unsigned syscallSig;
// For differentiating ARM core emulation.
bool is_v4; // Are we emulating a v4 architecture (or higher)?
bool is_v5; // Are we emulating a v5 architecture?
bool is_v5e; // Are we emulating a v5e architecture?
bool is_v6; // Are we emulating a v6 architecture?
bool is_v7; // Are we emulating a v7 architecture?
// TODO(bunnei): Move this cache to a better place - it should be per codeset (likely per
// process for our purposes), not per ARMul_State (which tracks CPU core state).
std::unordered_map<u32, int> instruction_cache;
};
/***************************************************************************\
* Types of ARM we know about *
\***************************************************************************/
enum {
ARM_v4_Prop = 0x01,
ARM_v5_Prop = 0x02,
ARM_v5e_Prop = 0x04,
ARM_v6_Prop = 0x08,
ARM_v7_Prop = 0x10,
};
/***************************************************************************\
* The hardware vector addresses *
\***************************************************************************/
@ -167,7 +148,6 @@ enum {
* Definitions of things in the emulator *
\***************************************************************************/
void ARMul_Reset(ARMul_State* state);
ARMul_State* ARMul_NewState(ARMul_State* state);
/***************************************************************************\
* Definitions of things in the co-processor interface *

2
src/core/arm/skyeye_common/armsupp.h
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@ -17,8 +17,6 @@ struct ARMul_State;
bool AddOverflow(u32, u32, u32);
bool SubOverflow(u32, u32, u32);
void ARMul_SelectProcessor(ARMul_State*, unsigned);
u32 AddWithCarry(u32, u32, u32, bool*, bool*);
bool ARMul_AddOverflowQ(u32, u32);